This interactive line chart visualizes weekly temperature fluctuations in San Francisco, with time on the x-axis and temperature on the y-axis. The visualization uses React and D3 v6, with scales created via `scaleTime` and `scaleLinear`. Data from a CSV file is loaded using `csv`, and the line is generated with the D3 `line` generator combined with `curveNatural` for smoothing. The SVG rendering includes styled gridlines, axis labels, and circular data points, each with a native tooltip showing the abbreviated weekday. The chart employs clearly defined margins and axis components to structure the layout.